Sahih Muslim 94 b
The Book of Faith
The evidence that the one who dies not associating anything with Allah will enter paradise, and the one who dies as idolator will enter the fire
Abu Dharr reported,: I came to the Messenger (ﷺ ) and he was asleep with a white mantle over him. I again came, he was still asleep, I came again and he had awakened. I sat by his side and (the Prophet) observed: There is none among the bondsmen who affirmed his faith in La illaha ill-Allah there is no God but Allah) and died in this state and did not enter Paradise. I (Abu Dharr) said: Even if he committed adultery and theft? He (the Prophet) replied: (Yes) even though he committed adultery and theft. I (again said): Even if he committed adultery and theft? He replied: (Yes) even though he committed adultery and theft. (Th Prophet (ﷺ) repeated it three times) and said for the fourth time: In defiance of Abu Dharr. Abu Dharr then went out and he repeated (these words): In defiance of Abu Dharr.